Lithium iron phosphate battery pack

　　Lithium iron phosphate battery pack refers to a lithium ion battery using lithium iron phosphate as the positive electrode. It is characterized by no cobalt and other valuable elements, low raw material price and abundant phosphorus and iron resources in the earth, so there will be no supply problem. It has moderate operating voltage (3.2V), large electrical capacity (170mAh/g) per unit component, high discharge power, fast charging and long cycle life, and high stability in high temperature and high heat environment.

　　Advantages of lithium iron phosphate battery pack:

　　It is small in size and light in weight. The volume of lithium battery pack is 2/3 of that of lead-acid battery, and the weight is light, as long as 1/3~1/4 of that of lead-acid battery.

　　The cycle life is long. The cycle life of lithium iron phosphate battery pack is 1200~2000 times, but that of traditional lead-acid battery is only 500~900 times.

　　The charge discharge characteristics are good. The charge discharge electric energy conversion efficiency of lithium battery pack can be more than 97%, and the charge discharge electric energy conversion efficiency of lead-acid battery is about 80%.

　　It is safe and environmentally friendly. The lithium iron phosphate material does not contain any heavy metals and rare metals, and is non-toxic. No matter in production and application, it is pollution-free. It complies with European RoHS regulations and is a green and environment-friendly lithium battery. In the experiments of puncture, kneading, overcharge, short circuit, etc., there is no explosion or fire.

　　Which is better, lithium titanate battery or lithium iron phosphate battery pack?

　　In the field of pure electric vehicles, most of the batteries are lithium iron phosphate battery packs or ternary lithium batteries. However, the core competitiveness of Yinlong buses that Gree is about to acquire is lithium titanate batteries that are innovative. The domestic automobile manufacturers still use ternary lithium batteries and lithium iron phosphate battery packs more frequently. Lithium titanate batteries have not been scaled up yet. In addition, the lithium titanate battery has a high price (high production cost, high humidity control requirements), about 9 yuan per watt hour, and a large gap with lithium iron phosphate battery and ternary lithium battery, about 2 yuan per watt hour.

　　The market space of lithium titanate battery will be very limited in the future. There are few enterprises doing lithium titanate batteries, which will lead to less investment in overall industrial development. From the perspective of current research and development investment and planning investment of battery enterprises, few enterprises will focus on developing lithium titanate batteries. In the future, the technological progress of lithium iron phosphate battery pack will surpass that of lithium titanate battery. Generally speaking, it is best to use lithium iron phosphate battery pack for electric vehicles, ranking first in safety.

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